Ios ContainerViewController委托给ChildViewController

ContainerViewController

将方法

-delegateMethod

委托给

ChildViewController

但是在下面的代码中，

-delegateMethod

未被调用。
我想这是因为

\u childViewController

已经发布了。
如何修复它以使run

-delegateMethod

ContainerViewController.h

@protocol ContainerViewDelegate <NSObject>

- (void)delegateMethod;

@end

@interface ContainerViewController : UIViewController

@property (nonatomic, assign) id<ContainerViewDelegate> delegate;

@end

ChildViewController.m

@interface ContainerViewController () {
    ChildViewController *_childViewController;
}

//...

- (void)viewDidLoad
{
    _childViewController = [[WeeklyViewController alloc]init];
    [self addChildViewController:_childViewController];
    [self.view addSubview:_childViewController.view];
    [_childViewController didMoveToParentViewController:self];
}

- (void)buttonAction {
    [self.delegate delegateMethod];
}

@interface ChildViewController () <ContainerViewDelegate>

//...

- (void)delegateMethod {
    NSLog(@"succeed!");
}

@接口ChildViewController（）
//...
-（作废）委托方法{
NSLog（@“成功！”）；
}

您从未设置委托，因此self.delegate将为零。你应该这样做

    - (void)viewDidLoad
{
    _childViewController = [[WeeklyViewController alloc]init];
    self.delegate = _childViewController;
    [self addChildViewController:_childViewController];
    [self.view addSubview:_childViewController.view];
    [_childViewController didMoveToParentViewController:self];
}

---

您从未设置委托，因此self.delegate将为零。你应该这样做

    - (void)viewDidLoad
{
    _childViewController = [[WeeklyViewController alloc]init];
    self.delegate = _childViewController;
    [self addChildViewController:_childViewController];
    [self.view addSubview:_childViewController.view];
    [_childViewController didMoveToParentViewController:self];
}

---

您从未设置委托，因此self.delegate将为零。你应该这样做

    - (void)viewDidLoad
{
    _childViewController = [[WeeklyViewController alloc]init];
    self.delegate = _childViewController;
    [self addChildViewController:_childViewController];
    [self.view addSubview:_childViewController.view];
    [_childViewController didMoveToParentViewController:self];
}

---

您从未设置委托，因此self.delegate将为零。你应该这样做

    - (void)viewDidLoad
{
    _childViewController = [[WeeklyViewController alloc]init];
    self.delegate = _childViewController;
    [self addChildViewController:_childViewController];
    [self.view addSubview:_childViewController.view];
    [_childViewController didMoveToParentViewController:self];
}

---

_未释放childViewController。当您将ContainerViewController作为子控件添加时，它得到了一个指向它的强指针。\u childViewController未被释放。当您将ContainerViewController作为子控件添加时，它得到了一个指向它的强指针。\u childViewController未被释放。当您将ContainerViewController作为子控件添加时，它得到了一个指向它的强指针。\u childViewController未被释放。当您将ContainerViewController作为子项添加时，它得到了一个指向它的强指针。